Tet is the most important ________ in Vietnam. (celebration / decoration / vacation / preparation)
celebration
He did a lot of ________ work last summer. (voluntary / volunteer / voluntarily / volunteering)
voluntary
Solar energy is a clean and ________ source of power. (non-renewable / renewable / wasteful / harmful)
renewable
We should try to save ________ by using public transport. (energy / information / pollution / consumption)
energy
Hue is famous for its royal tombs and historic ________. (monuments / movements / decorations / celebrations)
monuments
“Conical hat” is a symbol of Vietnamese ________. (culture / language / environment / technology)
culture
Robots can help with housework and make our life more ________. (difficult / suitable / convenient / polluted)
convenient
Air ________ is a serious problem in many big cities. (POLLUTE)
pollution
She felt very ________ after winning the English contest. (PRIDE)
proud
Water puppetry is a traditional form of ________ in Vietnam. (ENTERTAIN)
entertainment
The word “huge” is closest in meaning to: (small / big / tiny / narrow)
big
The word “reduce” is opposite in meaning to: (decrease / cut down / lower / increase)
increase
The word “traditional” is opposite in meaning to: (ancient / cultural / modern / old)
modern
The word “famous” is opposite in meaning to: (popular / well-known / unknown / celebrated)
unknown
Teenagers spend a lot of time ________ the Internet. (surfing / riding / flowing / turning)
surfing
